Lectern



FIG. 1 is a front perspective view of the lectern, showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a perspective view thereof; and,

FIG. 4 is side perspective view thereof.

The broken lines are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a lectern, as shown and described. 